This policy brief was developed by the Secretariat of the OECD Network of Economic Regulators (NER) and is based on examples of practice submitted by members of the NER. It reviews emergency measures taken by economic regulators during the COVID-19 pandemic to ensure continuity of services in network sectors, as well as to adjust regulatory practices and adapt governance arrangements. It identifies long-term questions and implications of the crisis with regard to market structure, infrastructure investment and the role of regulators.